u-boot: Fix u-boot default bootargs for console

We want ttyS4 for the palmetto BMC, and use the same baud rate as u-boot.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
diff --git a/meta-ibm/meta-palmetto/recipes-bsp/u-boot/files/patch-2013.07/0001-u-boot-openbmc.patch b/meta-ibm/meta-palmetto/recipes-bsp/u-boot/files/patch-2013.07/0001-u-boot-openbmc.patch
index bf77686..1c1c5ea 100644
--- a/meta-ibm/meta-palmetto/recipes-bsp/u-boot/files/patch-2013.07/0001-u-boot-openbmc.patch
+++ b/meta-ibm/meta-palmetto/recipes-bsp/u-boot/files/patch-2013.07/0001-u-boot-openbmc.patch
@@ -1679,7 +1679,7 @@
 +#define CONFIG_CMDLINE_TAG	 1		/* enable passing of ATAGs	*/
 +#define CONFIG_SETUP_MEMORY_TAGS 1
 +#define CONFIG_INITRD_TAG	 1
-+#define	CONFIG_BOOTARGS 	"debug console=ttyS0,57600n8 root=/dev/ram rw"
++#define	CONFIG_BOOTARGS 	"debug console=ttyS4,38400n8 root=/dev/ram rw"
 +#define CONFIG_UPDATE           "tftp 40800000 ast2400.scr; so 40800000'"
 +
 +#define CONFIG_BOOTDELAY	3		/* autoboot after 3 seconds	*/